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#3194711 - 11/22/13 11:03 AM Hydrogen powered cars?
Tomcat_80 Offline


Registered: 11/21/13
Posts: 88
Loc: North Carolina, U.S.A.
Hello, new member here. I was noticing on the news this morning; at a car show in Los Angeles, they had I believe some hydrogen powered cars. Is this something we can look forward to seeing in the future? Also, does anyone know if we will see sometime in the future a propane or LNG or LPG powered car or light truck?

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#3194724 - 11/22/13 11:19 AM Re: Hydrogen powered cars? [Re: Tomcat_80]
Garak Offline


Registered: 12/05/09
Posts: 10967
Loc: Regina, Saskatchewan, Canada
Hydrogen will require a lot of infrastructure changes - and I mean a lot. Hydrogen is really an energy carrier rather than a real energy source, unless, of course, you're the sun.

I've run LPG cars with good success. The problem here was the the more popular the fuel became, the higher the price became, which destroyed its main advantages. It was also more attractive in older vehicles with fewer emissions controls, too, since you'd get good emissions advantages from conversion.

I certainly would love to see more LPG vehicles again. They were great in taxi service for a lot of reasons. In fact, they spoiled me because of no fuel dilution in the oil. wink
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#3194725 - 11/22/13 11:19 AM Re: Hydrogen powered cars? [Re: Tomcat_80]
sdowney717 Offline


Registered: 10/01/05
Posts: 236
Loc: Newport News, VA
If it is a tank of hydrogen, then it has to gas off to relive pressure.
So in a week or so a full tank is empty.

Quote:
The storage problem is also a thorny one. Hydrogen is a gas and it likes to spread out. Putting it in a car means squeezing it down to a reasonable size, and that isn't easy. Furthermore, hydrogen gets warm while it's sitting in the tank of a parked car, which causes the gas to expand. This means that the tanks have to vent the hydrogen periodically from the car. Leave a hydrogen car sitting around for more than a few days and all the fuel will be gone.


http://www.howstuffworks.com/fuel-efficiency/hybrid-technology/hydrogen-cars3.htm

So has anything regarding that changed?

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#3194728 - 11/22/13 11:25 AM Re: Hydrogen powered cars? [Re: Tomcat_80]
izualangel Offline


Registered: 11/08/12
Posts: 41
Loc: SL,UT
In Utah LNG conversions are pretty popular. I've seen cars, and light trucks that run on natural gas, and the cost to fill up is still cheaper than gasoline. Given it's popularity here, it's not really hard to find a LNG station where you can fill up.
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#3194730 - 11/22/13 11:29 AM Re: Hydrogen powered cars? [Re: Tomcat_80]
BMWTurboDzl Offline


Registered: 04/15/10
Posts: 1181
Loc: Atlanta,GA
Isn't this hydrogen fuel cells instead of hydrogen gas being burned in combustion chamber?
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#3194733 - 11/22/13 11:33 AM Re: Hydrogen powered cars? [Re: Tomcat_80]
NateDN10 Offline


Registered: 01/10/10
Posts: 1372
Loc: Rochester, NY
Honda has been making a CNG version of the Civic for a while now, and I believe Ford is coming out with a factory-equipped CNG F-150 as well. There are also retrofit kits for other vehicles. However, it's still not cost effective - for example, the CNG Civic starts at over $26,000 while the regular Civic starts at around $18,000.

I recently read an article on C&D that Toyota had been able to reduce the price of its hydrogen fuel cell module by 95% - from $1M to $50,000. And hydrogen has even less availability than CNG.

Maybe at sometime in the future we'll all be driving CNG or hydrogen fueled vehicles, but it won't be in 5 years and probably not in 10 years either.
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#3194735 - 11/22/13 11:34 AM Re: Hydrogen powered cars? [Re: BMWTurboDzl]
sdowney717 Offline


Registered: 10/01/05
Posts: 236
Loc: Newport News, VA
Originally Posted By: BMWTurboDzl
Isn't this hydrogen fuel cells instead of hydrogen gas being burned in combustion chamber?


Car still must have a source of hydrogen in a tank.
Where does the hydrogen go when the car is sitting and the pressures build up?

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#3194736 - 11/22/13 11:35 AM Re: Hydrogen powered cars? [Re: Tomcat_80]
440Magnum Offline


Registered: 02/01/09
Posts: 6099
Loc: Texas
LPG conversions are relatively easy and common. A buddy has a very nicely converted '64 Dodge truck with a custom-built (high compression) slant-6 to take advantage of the very high effective octane. Great driveability, and more power than a stocker. But he has to travel outside of town very carefully and with a map of available LPG stations.

A co-worker has a CNG powered Civic- those were available a few years ago. Nice package, but its literally tied to the city because there are no other CNG refuelling stations within its driving range right now. Its worse than an EV in terms of where you can drive it, but great for commuting.

The problem I see with hydrogen is creating enough to be a viable fuel. Electrolysis from water is pretty much a non-starter because you have to put in more energy (electricity) than you get back when you burn the hydrogen. OK, so you build massive wind-farms to get "fee" electricity to crack seawater... but that's ridiculous on a large enough scale (and I'd rather use THAT power to de-salinate seawater for drinking rather than depleting groundwater). You can get it as a byproduct of refining crude oil... but isn't that kinda negating one of the attractions?

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#3194739 - 11/22/13 11:35 AM Re: Hydrogen powered cars? [Re: BMWTurboDzl]
NateDN10 Offline


Registered: 01/10/10
Posts: 1372
Loc: Rochester, NY
Originally Posted By: BMWTurboDzl
Isn't this hydrogen fuel cells instead of hydrogen gas being burned in combustion chamber?


That's the easy and inefficient way. Fuel cells are more efficient, but also more expensive.


Edited by NateDN10 (11/22/13 11:36 AM)
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#3194743 - 11/22/13 11:41 AM Re: Hydrogen powered cars? [Re: Tomcat_80]
ARCOgraphite Offline


Registered: 05/17/09
Posts: 8353
Loc: N.H, U.S.A.
Toyota promised a Hydrogen fuell cell car for 2015. This is Hydrogen reaction (making but H-O-H "exhaust" waste) to produce electricity.


Edited by ARCOgraphite (11/22/13 11:43 AM)
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#3194768 - 11/22/13 12:11 PM Re: Hydrogen powered cars? [Re: Tomcat_80]
SHOZ Online   shocked


Registered: 06/28/03
Posts: 1541
Loc: Illinois
Hyundai is suppose to come out with one for the 2014 model year.


Hyundai Becomes First Company to Mass Produce Hydrogen Fuel Cell Cars

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#3194770 - 11/22/13 12:13 PM Re: Hydrogen powered cars? [Re: Tomcat_80]
JHZR2 Offline



Registered: 12/14/02
Posts: 33221
Loc: New Jersey
Nothing wrong with PEM fuel cells for vehicle applications, and many of the hydrogen storage issues are overblown.

The problem still is that making hydrogen is still inefficient. Electrolysis is inefficient, and so even if fed with free solar energy which has its own conversion efficiency problems. Reformation of liquid fuels makes a ton of sense, but start times and whatnot are challenges.

FCs dont have carnot efficiency issues, and the conversion efficiency of an FC can be roughly .7V/1.23V=57%, higher at lighter load. Far better than even the most advanced diesels, if the hydrogen production efficiencies can be kept high.

Cost, commercial adopters, and need for energy storage are some of the challenges that make it tough to adapt.

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#3194771 - 11/22/13 12:14 PM Re: Hydrogen powered cars? [Re: Tomcat_80]
SHOZ Online   shocked


Registered: 06/28/03
Posts: 1541
Loc: Illinois
One of the problems with windmills is what to do with the power when it's not needed. I think this would work well with some H2 production.

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#3194783 - 11/22/13 12:28 PM Re: Hydrogen powered cars? [Re: Tomcat_80]
rshaw125 Offline


Registered: 08/18/04
Posts: 2476
Loc: Raleigh ,NC CSA
Home refueling.

http://automobiles.honda.com/fcx-clarity/home-energy-station.aspx

The infrastructure is already there. If you have gas line to your house.
Combine this with some solar panels.
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#3194823 - 11/22/13 01:03 PM Re: Hydrogen powered cars? [Re: Tomcat_80]
A_Harman Offline


Registered: 10/01/10
Posts: 3974
Loc: Michigan
There is another form of Hydrogen that is being considered for use as a fuel: anhydrous ammonia (NH3). Its main advantage is that it is stored as a liquid (moderately pressurized like LPG) on the vehicle, so the main problem of gaseous storage of high-pressure H2 is avoided. Just do an Internet search using "ammonia fueled engines", and you can read up on it.


Edited by A_Harman (11/22/13 01:08 PM)
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